GB701514A - Improvements in and relating to methods for the manufacture of cathode ray tube screens - Google Patents

Improvements in and relating to methods for the manufacture of cathode ray tube screens

Info

Publication number
GB701514A
GB701514A GB14634/50A GB1463450A GB701514A GB 701514 A GB701514 A GB 701514A GB 14634/50 A GB14634/50 A GB 14634/50A GB 1463450 A GB1463450 A GB 1463450A GB 701514 A GB701514 A GB 701514A
Authority
GB
United Kingdom
Prior art keywords
filaments
substance
metal
grating
microns
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB14634/50A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ELECTRONIQE SOC GEN
Original Assignee
ELECTRONIQE SOC GEN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ELECTRONIQE SOC GEN filed Critical ELECTRONIQE SOC GEN
Publication of GB701514A publication Critical patent/GB701514A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7425—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being a dielectric deformable layer controlled by an electron beam, e.g. eidophor projector
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/12—Screens on or from which an image or pattern is formed, picked up, converted or stored acting as light valves by shutter operation, e.g. for eidophor

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Treatment Of Liquids With Adsorbents In General (AREA)

Abstract

701,514. Cathode-ray tubes. SOC. GENERALE D'ELECTRONIQUE. June 12, 1950 [June 11, 1949; May 24, 1950], No. 14634/50. Class 39(1) A method of manufacturing screens, for example for use in the light modulation system described and claimed in Specification 684,706 comprises arranging on the insulating layer 2 of a metal plate 1 a network of parallel filaments 3, evaporating an " intermediate " substance 4 on to the layer 2, removing the filaments 3, arranging a similar network of filaments 8 on the layer 2 in another direction, evaporating metal 7 on to the substance 4, removing the second network 8 and removing the substance 4, Figs. 2, 4. The filaments 3 may be of nylon, silk or metal and have a diameter of 20 microns and a pitch of 80 microns; they may be wound round the rectangular plate 1, 2 or stretched across a frame to form a grating and the grating is then applied to the plate. The filaments may be cylindrical or square in section. If a grating is used it may be utilized for the second evaporation as well as the first by rotating it through 90 degrees. The two evaporations may be effected obliquely e.g. at 45 degrees so as to form separations between the elements 4 and 5. If the evaporations are effected normally instead of obliquely a series of corrugated parallel metal tapes are obtained instead of discrete square elements 7, Fig. 7 (not shown). The intermediate substance 4 may have a thickness of 1.5 microns and may be paraffin wax and is finally removed by evaporation or a solvent. The insulating coating 2 is deposited by anodizing, evaporation, or electrophoresis.
GB14634/50A 1950-05-24 1950-06-12 Improvements in and relating to methods for the manufacture of cathode ray tube screens Expired GB701514A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR240550X 1950-05-24
FR994391T 1950-05-24

Publications (1)

Publication Number Publication Date
GB701514A true GB701514A (en) 1953-12-30

Family

ID=26214253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB14634/50A Expired GB701514A (en) 1950-05-24 1950-06-12 Improvements in and relating to methods for the manufacture of cathode ray tube screens

Country Status (6)

Country Link
US (1) US2644208A (en)
CH (1) CH288036A (en)
DE (1) DE872065C (en)
FR (1) FR994391A (en)
GB (1) GB701514A (en)
NL (1) NL154063B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733501A (en) * 1956-02-07 Electrostatic shutter mosaic and method of manufacture
US2749598A (en) * 1952-02-01 1956-06-12 Richard K Orthuber Method of preparing electrostatic shutter mosaics
US2906637A (en) * 1953-05-19 1959-09-29 Electronique Soc Gen Method of forming a film a short distance from a surface
US2815462A (en) * 1953-05-19 1957-12-03 Electronique Sa Soc Gen Method of forming a film supported a short distance from a surface and cathode-ray tube incorporating such film
NL193679A (en) * 1954-12-30
US2906648A (en) * 1955-11-25 1959-09-29 Gen Mills Inc Masking method of producing a humidity sensor
US2880486A (en) * 1956-05-28 1959-04-07 Edgar C Wallace Method of making investment castings
US3237253A (en) * 1964-01-07 1966-03-01 James E Webb Method of making screen by casting
US5179993A (en) * 1991-03-26 1993-01-19 Hughes Aircraft Company Method of fabricating anisometric metal needles and birefringent suspension thereof in dielectric fluid
US5488505A (en) * 1992-10-01 1996-01-30 Engle; Craig D. Enhanced electrostatic shutter mosaic modulator
US5640266A (en) * 1992-10-07 1997-06-17 Engle; Craig D. Electronically addressed deformable mirror device
US5561548A (en) * 1992-10-07 1996-10-01 Engle; Craig D. Enhanced membrane light modulator
US6147789A (en) * 1998-05-04 2000-11-14 Gelbart; Daniel High speed deformable mirror light valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2243237A (en) * 1941-05-27 Process of producing metal emboss
BE420834A (en) * 1936-03-30
US2362507A (en) * 1942-10-27 1944-11-14 Steinbock Method and means for producing commercial castings

Also Published As

Publication number Publication date
DE872065C (en) 1953-03-30
NL154063B (en)
CH288036A (en) 1952-12-31
FR994391A (en) 1951-11-15
US2644208A (en) 1953-07-07

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